Multiple spindle drill



Aug. 28, 1923. 1,466,145

- F. E. NEITZEL MULTI PLE S PINDLE DRILL Filed July 31. 1919 18 sheets-sheet 1 UHlHflmmfmfnu,

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Afm/vnf Aug. 28, 1923. 1,466,145 F. E. NElTzEL MULTI PLE SPINDLE DR-ILL Filed July 31, 1919 1B Sl'xeeizs-'Shamv 5 Aug. 28, 1923. I El F. E. NEITZEL MULTIPLE SPINDLE DRILL Filed'duly :51, 1919 1s Sheets-Sheet 4 Z3 wf 46.2

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Aug. 2s, 1923,

l 1,466,145 F. E. NEITZEL MULTIPLE SPINDLE DRILL Filed July .'51, 1919 18 Sheets-Sheet 5 Aug. 28, 1923.

F. E. NEITZEL MULTIPLE ,SPINDLE DRILL Filed July 3l, 1919 18 SheebS-SheelI 6 v Arm/Mfrs N .v mvhv MNEQ v Aug. 2s, 1923. l 1,466,145 F. E. NEITZEL.

lMULTIPLE SPINDLE DRILL Filed July 31, 1919 18 Sheets-"Sheet '7 ATT U19/VE YS,

Aug. 28, 1923. 1,466,145 F. E. NElTzEL MULTI PLE S PINDLE DRILL Filed July 51, 1919 18 ShebS-Sheel', 8

INVENTO? A TTOR/VEYS ug. 28, 1923. HASMS F. E. NEITZEI.

MULTIPLE SPINDLE DRILL Filed July 3l, 1919 18 Sheets-Sheet 9 I N VEN TOR.

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Augzs, 1923. I1,466,145

F. E. NEITZEL I MULTI PLE S PINDLE DRILL Filed Jul-y 31. 1919 18 Sheets-Sheet 10 /62' W /9 ggxmmmm,

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F. E. NElTzEL MULTIPLE S PINDLE DRILL 6,72 0N we ,Q2-22, Fla: .1.

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F. E. NEITZEL MULTIPLE SPINDLE DRILL Filedl July 31, 1919' 18 Sheets-Sheet 13 /1 TTORNEYS lAMS Aug. 28, 923.

F. E. NEITZEL.

MULTIPLE SPINDLEDRILL Filed July 51; 1919 18 V'sheetsnqheet 14 Anon/uns Auges, 1923. l 4 1,466,145

. F. E. NEITZEL ATTORNEYS.

F. E. NEITZEL MULTIPLE SPINDLE DRILL FiIed July 31, 1919 18 sheets-Sheet Ie 0^/ L//vf ,2Q-29, F76. 27. Mp3@ A TTORNE Y Aug, 28, 1923.

A 1,466,145 F. E. NEITZEL MULTIPLE SPINDLE DRILL Filed July 31. 1919 18 Sheets-Sheet 1v 0N we `30.30, Ffa. 29.,

Aug. 28, 1923.

F. E. NEITZEL.

MULTIPLE SPINDLE DRILL Filed July Z1, 11919 18 Sheets-Sheet 1&3v

'ATTORNEYS Patented Aug. 2e, 1923.

'Uivlifizjn STATES l 1,466,145 PATENT omer..

FRANK YEGON NEITZEL, or sAN FRANCISCO, CALIFORNIA, AssIGNoR To BETHLEHEM vysIIIrBUI-LDING CORPQRATIQN, 'CORPORATION Aor DELAWARE.

LTD., or 'soU'rI-I EETIILEHEM,V rENNsYLvANIA,-A'

MULTIPLE SPINDLE DRILL.

' Y.Application led July 31, 1919'. Serial No.- 314,510.

T0. .all whom imag concern:

Be it knownthat I, FRA-NK'EGoN NEITZEL, a citizen of the United States, .residing in the city and .county of San Francisco, State of 'Californizu haveinvented a new and useful Multiple Spindle Drill, of which the following is a specilication. f

iMypresent invention comprehends a novel f construction ofa multiple drill which is especially designed for drilling the holes for tubes in Vboiler drums, although as is apparent, it can be employed in all cases where'- in it is `,desired to'simultaneously drill or ream a multiplicityof holes. It further comprehends anovel construction and arrangement ofav drill head, novel means forY mounting the drill heads so that they may be brought into closely spaced re- Y lationship, novel. driving mechanism for the v spindles carried vby the drill heads and a novel construction and arrangement of mechanism for controlling the spindle drivingmechanism. Y Y

It further consists of a novel vconstruction, and arrangement or' actuating .mechanism for the feed table which is Vpreferably automatically controlled by means on the spin dle carrying head.

Other novel features of construction and advantage will hereinafter more clearly appear in thev detailed description of the .in-

vention. l. For the purpose of illustrating ,one manner. ofcarrying out my invention in practice, I have shown in the accompanying drawings a typical embodiment-offit which.

in practice will give satisfactory and reliable results. It is, however, to be understood that this embodiment is, typical only and' that the various instrumentalities ol'which my invention consists Vcan be variously arranged and organized and that the invention is not limited to the precise arrangement and organization of-these `instrumentalities as'lierein set forth.

, Figure lrrepresents, in front multipleV spindle drill, embodying my invention.

Figure 2`.re1i `resents'a top plan view of the drill. v p l .Figure Srepresents an end elevation of the drill, viewed from the left-hand side of the machine.

v Figure 4 representsnanKend elevation of elevation, aA

the drill, viewed from' the right-hand.sidefof the machine.

Figure `5 represents, in perspective, a tripping deviceV employed and certain of fits Figure 7.

Figure 9 represents, in perspective, and in detached position, a nut employed which isl shown in assembled position in Figure 8.

Figure 10 represents a section 'on line .l0-10 Figure 2. Figure 11 represents a section on line.

114-11 Figure 1.A I

Figure 12 :represents an end elevation,

partly in section, of certain features of the table controlling mechanism.

v.Figure 13 represents. a sectional Yview of a portion of the drum seen in Figure 12. f

"Figure 14.- represents a top plan'vie-w oi a stop member seen in Figures 12 and 13.

Figure 15 represents, in sectional elevation, a bolt and the stop which it carries.

Figure .16 represents a bottomp-lan view of the construction seenin Figure 15.

Figure 17.representsf asection on line 17-17 of Figure 2,1 showing more particularly `the manner Vinwvliich the drum and certain of its adjuncts are mounted.

Figure .18 represents a section on line 18--18 Figure 19. f

. .Figure 19 represents va section on line 19`19otFigure V18.v n I. Figure..20 represents a section on line 20.-20 of .Figure 1,' showing more clearly the mannerv in which thespindles are mount! ed and driven.

-Figure' 21 represents a section on. line: f

Figure 23 represents, in sectional elevavtion, anotherenibodiment of my rinvention wherein spacing elements are employed between'the spindle sockets.

`Figure 24 represent-s, in perspective, a. spacing :element dseen. in y.Figure 23.r 1'

Figure 25.. representsf a. .section v on line `29--29 of Figure 27.

25-25 of Figure 1, showing `more clearly,-

on an enlarged scale, the manner in which the drill spindles are mounted and driven.

Figure V26 represents, in frontelevation,

the feed gear box and certain of its adjuncits. 'Y

VFigure 27 represents a Vsection on line 27-27 of FigureV 26.

Figure 28 represents a section online.

28--28 of Figure 1, showing more clearly the friction feed, and the manner in which Figure 3l represents a section onw line 31-31 of'Figure 29.

-V shaft 19 which also has Vmountedon it a pul work.

`metal of any desired shape.

` base.

.Similar numerals of yreference indicate corresponding parts.

ReferringL to the drawings,

Thev framework of the machine.

The framework of the machine consists of abase or foundation lgto which are connectedside frames 2, braced at their upper end bymeans of a cross beamB of structural The base 1 is provided with laterally extending tracks 4, see Figures l and 2, which extend outwardly beyond the base and are supported attheir outer ends by brackets 5 connected yto the The tracks are adapted to `have mounted on them a work carrying table f6, having the depending ribs 7, see more particularly Figure 1, which are guided in the slotsv` 8 in the track 4. i .Y

The table G is provided with means for actuating it, and such means will ybe hereinafter fully set forth.

The base of the machine carries a :main driving motor 9, see Figure 4, the shaft .of

1 which is provided with a pulleylO, 'around which passes a` belt 11, which also passes around a compound pulley 12I which is' mounted on ra countershaft 13 journalledlin the side frames. Y f

14 is a belt which passes around thepulle'y l2 and also around a compound pulley 15 mounted on a shaft 16 carried by afside frame 2. A belt 17 passes around the pullley 15 and around a pulley 18 mountedon a ley 20, around which' passes a belt 21, which .also passes around a pulley 22, mounted on'l ashaft 23 j ournalled yinfthemachine frame The shaft 23 extends into the feed gearr Vbor; 24 which is carried by the cross beam 3, whichrconnects the side frames The' shaft 23 is provided. with a pinion 25, see

i' Figure `29,which meshes-*with a :gear 26,

end of the rock sha-ft 45.

`The shaft 23, is alsoV provided V with a.

worm 28 which meshes witha .worm wheel with Va clutch face 3.8,r which co-operates with a clutch collar 34 of a clutch collar, which latteris also provided with a clutch face 3G, which co-oper'ates witlra clutch" face 37 of the worm wheel32, so thatlthe' shafts'23 and 27 can Vbe operatively rconnected with each other., i.` Y.

The clutch-:collar' .is keyed tothe shaft 27 to rotate in unison with it and the clutch collar 35 is provided with a yokei38, which is fulcrumed at 39 and hasanarmv 40, which Y extends through aslot inlthe `gear lcoXv .24l and has its outer end .eXtendin-gfint'o afsl'ot 4l in a longitudinally slidable rod 42, vwhich is loosely mounted on the lgear box. l Therod 42 has fixed to it a rack sleevef4'3, see Figure 28,- uf'ith'which engagesa rack segment 44 fixed to a rock-*shaft journalled onv the feed gear bonv `24. Ain actuating arm 46 is fixedly secured totheforward The rockshaft 45 has loosely mounted on it an actuating lever `417 lto* which isconnected one end of a slide only longitudinal movement, and a spring Y 56 is provided which tends to retain a ystop arm 57 on the plunger 1n its upward oroperativeposition andin the. path of an larm 58 which extends through a slot-.'59 in the feed gear 'box and is connected'to the yoke 38, seefmore particularly Figure 30. i f f l provide a friction brake forsuch 'yoke' 38, which consists of a plunger 60, seer more' particularly Figure-80, slidableviin alsleeve '1 6l extending througha `wall vof the feedgear box 24'. A=spring G2-is provided'goneV end of which abuts against the'l-plunger while its opposite endabutsagainst an adjusting screw G3 in engagement with Y the sleeve |and .providedlwith a; lock nut V64. The plunger bears against a roller car# ried by the voke 38. I Y

VThe shaft 23, se'evFigures 26, 28 and 29,A has mounted on it a friction gear 66,.'andY the shaft 27 has mountedonit a friction gear 67. Y,

As; will be best understood by reference `to Figure 28, a rock shaft 68 is suitably 1 

